Flywheel mounting



kJune 25, 1935. GQ Q, VJQHNSQN 2,005,941

FLYWHEEL MOUNTING vFiled DecQ 5, '1954 2 sheets-sheet `1 /=-/\`U o 1@ f2 -4 D C F /II 'L| "\{/Zb EFW ,14 .ll ini z` i i 1 52 i 'ILE I L-llINVENTOR.

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ATTORNEYS June Z5, 1935. v G. o. Jo'HNsoN 2,005,941

` FLYWHEEL MOUNTING Filed Dec. 5, 1934 2 Sheets-Sheet? INVENTOR HMMATTORNEYS Patented June 25, 1935 UNITED STATES FLYWHEEL MOUNTING Gustaf0. Johnson, Elkhart, Ind., :assigner to i Loshbough-Jordan Tool-f&`Machine Co., Elkhart, l'nd.

Application 'December 5, 1934, 'Serial'Nm '755,115V

20 Claims.

The main objects of this invention are:

First, to provide an improved assembly embodying a flywheel mounted iorrotation on the end of a crankshaft, the flywheel and shaft beingadapted to be connected by means of an intermittently operative clutch.

Second, to provide means inan assembly of the foregoing character forsupporting the ilywheel on the shaft While partially withdrawn therefromto facilitate servicing of the clutch.

Third, to provide means for preventing the accidental completewithdrawal of the 'ilywheel from the end of the shaft.

Objects relating to details and economies of my invention will appearfrom the description to follow. rlhe invention is deiined and pointedout in the claims.

A `structure which is a preferred embodiment of my invention isillustrated in the accompanying drawings, in which:

Fig. l is a fragmentary view in 'front elevation of a punch pressembodying features of my invention, the hub closure being opened and theilywheel partially withdrawn from the crankshaft to facilitate servicingthe clutch.

Fig. 2 is an enlarged fragmentary longitudinal section taken on a linecorresponding to line 42--2 of Fig. l, the dotted lines showing theflywheel partially withdrawn from the crankshaft.

Fig, 3 is an enlarged fragmentary longitudinal section on line 3-3 ofFigs. 4 and 5, and showing the iiywheel partially withdrawn fromthecrankshaft.

Fig. 4 is a transverse view partially in section on line 4 4 of Fig. 3.

Fig. 5 is a transverse view partially in section on line 5-5 of Fig. 3.

Fig. 6 is a fragmentary View partially in side elevation and partiallyin longitudinal section of 40 certain of the parts disassembled relativeto the shaft.

Referring to the drawings, i in general is a punch press havin-g acrankshaft 2 provided with a iiywheel 33 rotatably mounted on one :endthereof and adapted to be intermittently connected thereto by 'means ofa clutch designated kgenerally by the numeral 5d and including theclutch elements It. The flywheel runs freely on the shaft except whenthe clutch is engaged.

The flywheel is relatively heavy, and in the .past in servicing theclutch it has been necessary., or at least the desirable practice hasbeen, to use a crane to support the iiyweel, the flywheel beingcompletely withdrawn from the end or the shaft. This prior practice wasdangerous and expensive,

(Cl. l30S- 211) 'andI 'therefore aim to completely avoid it. Myarrangement is such that the flywheel may be partially Withdrawn fromthe shaft, as shown'by Fig. 1, to manipulate the clutch member 'll Whilethe flywheel `is-supported by the shaft. VIn `this way, the clutch maybe` serviced even by the `opcrater of the machine "in a quick, safe andeconomical manner.

il( provide the Vshaft 2 with an end or spindle portion '5 having anannular shoulder 6 at its 10 inner end. The shaft portion 5 also has anaxial bore I inthe outerend of which is threaded a nut 8 having an outercross tongue 9. The pin Hl extends through'theaxia'l hole i I in the nutI8 and has van Iinner end 'flange l2 constituting a stop adapted Itovcoact with the `nut `Si to limit the out- Ward movement of the pin.

"Ilo Ithe'outer end of the -pin lil I thread an end cap f3 having aninner cross groove or slot I4, an inturned 'rim Ior peripheral flange i5and a hexagonal A'head alfS. The end cap is nxed to the pin by anysuitable means, 'such as welding, after the parts have been threadedtogether. The inturned flange I5 off `the fend cap is telescoped overthe outer end fol the shaft, as shown, the end cap being releasablysecured tothe end of the shaft by meanso the cap screws 11.

The flywheel has a hub I8 provided with an internal annular filange 519spaced from its outer end 'and constituting an abutment for the outerringorlrace 20 of the inner roller bearing 2|. A sleeve 22 `lstelescoped within the hub with its inner end abutting the ring 2t, thesleeve having spaced internal annular temporary supports or ilangesorribs 23 normally slightly spaced from the end portion E 4of the shaft 2.The outer ring 24 of the outer roller bearing 25 abuts the outer end ofthe sleeve, the latter `being clamped between the outer rings of thebearings by means of `an annular end member or hub cap 26 bolted at 21to the outer end of the hub and having an inwardly extending annularflange 28 abutting the Iouter ring 'of 'the outer bearing.

'Theinnerfan'd outer roller bearings have inner rings .or races '29 and39 sleeved on the end portion 5 'of the shaft for longitudinal slidingmovementor adjustment thereon, the inner ring of the inner bearingabutting the annular shoulder 6 .of the shaft, and the inner ring of theouter bearing abuttng'theinturned rim flange I5 of the end "cap 1.3. Theend cap thus acts to hold the flywheel in place on the end portion 5 ofthe shaft.

The closure 3| of the hub cap 26 is removably secured by the screws 32and acts to close the interior of the hub and retain a lubricant (notshown) therein. The cap screws il are made accessible through the hubcap 26 by opening the closure 3l as shown by Fig. l.

The cap screws il are unscrewed from the end of the shaft to release theend cap i3, thus permitting the flywheel to be moved longitudinally ofthe shaft to partially withdraw the same, such movement being limited bythe engagement of the inner end llange i2 of the pin l0 with the nut Sto prevent the accidental complete withdrawal of the ywheel from theshaft. The internal annular supports 23 of the sleeve 22 coact with theshaft to hold up the flywheel when the latter is partially withdrawn tosuch an extent that the inner ring of the outer bearing is clear of theouter end of the shaft as shown by Fig. 3. With the iiywheel in thisposition, the operator 33 may remove or insert the clutch elements ilwithout using a crane to hold up the flywheel or requiring extra laborto remove the latter. The ternporary supports 23 are slightly spacedfrom the end portion 5 of the shaft during the normal operation of thelatter, but in partially withdrawing the flywheel, these temporarysupports rest on the shaft, as shown by Fig. 3, allowing the operator tomanipulate the flywheel longitudinally of the shaft.

Ordinarily, without using a crane, an attempt to partially withdraw theflywheel from the shaft would be extremely dangerous owing to the factthat the flywheel being heavy is liable to slide clear off the shaft,but I have entirely eliminated this hazard by the provision of the nut 8and pin l. The pin is fastened to the end cap which is held in place bythe cap screws l 'l as pointed out above, the cap screws when drawn uptight holding the parts in proper position so that the flywheel cannotcome oir" the shaft under any circumstances. However, when a clutchelement has to be removed for repairs or replacement or for any reason,it is only necessary to take out the cap screws and then pull out thewheel, allowing the stop pin to slide out of the retaining nut until itsstop I2 engages the coacting stop 8, positively preventing theaccidental complete withdrawal of the wheel from the shaft. The wheelcannot slide or drop off the shaft, but will be supported by the shaftwhile the clutch elements are removed, replaced or renewed. When thishas been accomplished, it is only necessary to push the wheel back andscrew in the cap screws, thereby restoring the wheel to the normal oroperative position.

If for some reason the wheel is to be taken from the shaft, the closure3l is removed and the cap screws il are unscrewed from the end of theshaft. Next, without pulling out the end cap I3, the latter is turned bymeans of the hexagonal head i5 to unscrew the stop nut 8 from the borel', the connection between the end cap and nut being provided by thecross groove or slot lli and tongue t. The whole assembly is thusreleased from the shaft so that the flywheel can be removed, leaving thebearings in place in the hub.

From the foregoing description of my invention, it will be apparent tothose skilled in the` art that I provide a flywheel mounting which issimple and economical in its parts, and very elhcient and effective forthe purpose intended.

The arrangement is such that the clutch may be serviced by an unskilledoperator without danger, and further, in case of need, the flywheel maybe easily and quickly removed entirely from the shaft.

I have illustrated and described my improvements in an embodiment whichI have found very practical. I have not attempted to illustrate ordescribe other embodiments or adaptations as it is believed thisdisclosure will enable those skilled in the art to embody or adapt myimprovements as may be desired.

Although I have shown and described a certain specific embodiment of myinvention, I am fully aware that many modifications thereof arepossible. My invention is therefore not to be restricted except in soiar as is necessitated by the prior art and by the spirit of theappended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

l. The combina-tion of a shaft having an end portion provided with anannular shoulder at its inner end and an axial bore, a nut threaded inthe outer end of said bore and having an axial hole, a, pin extendingthrough said and having a stop adapted to coact with nut to limit theoutward movement of the pin, an end cap threaded to the outer end ofsaid pin and having an inturned rim iiange fitting over the outer edgeof said shaft, cap screws connecting said end cap to the outer end ofsaid shaft, a flywhee having a hub provided with an internal annulariiange spaced from its outer end, an inner roller bearing having anouter ring abutting said hub flange, a sleeve telescoped within said hubwith its inner end abutting said ring and having spaced internal annulartemporary supports normally spaced from shaft, an outer roller bearinghaving an outer ring abutting the outer end of said sleeve, an annularend member bolted to the outer end of said hub and having an inwardlyextending annular flange abutting the outer ring of said outer rollerbearing and acting to Clamp said sleeve between said outer rings, saidinner and outer roller bearings having inner rings sleeved on the endportion of said shaft for longitudinal movement, the inner ring of theinner roller bearing abutting said annular shoulder and the inner ringof t le out x roller bearing abutting the inturned rim flange of saidend cap, and a closure removably mounted on the said annular end member,said cap screws being made accessible for releasing said end cap fromsaid shaft by the opening of said closure, the release of said end cappermitting the flywheel to be moved longitudinally of the shaft, suchmovement being limited by the engagement of the stop of said pin withsaid nut to prevent the accidental complete withdrawal of the flywheelfrom the shaft, said internal annular supports coacting with the shaftto support the flywheel when the latter is partially withdrawn to suchan extent that the inner ring of the outer roller bearing is clear ofthe outer end of the shaft.

2. The combination of a shaft having an end portion provided with anannular shoulder at its inner end and an axial bore, a nut threaded inthe outer end of said bore and having an axial hole, a pin extendingthrough said hole and having a stop adapted to coact with said nut tolimit the outward movement of the pin, an end cap threaded to the outerend of said pin and having an inturned rim liange fitting over the outeredge of said shaft, cap screws connecting said end cap to the outer endof said shaft, a ywheel having a hub provided with an internal annularflange spaced from its outer end, an inner roller bearing having anouter ring abutting said hub flange, a sleeve telescoped within said hubwith its'inner end abutting said ring and having spaced internal annulartemporary supports normally spaced from said shaft, an outer. rollerbearing having an outer ring abutting the outer end of said sleeve, andan annular end member bolted to the outer end `of said hub and having aninwardly extending annular flange abutting the outer ring of said outerroller bearing'and acting to clamp said sleeve between said outer rings,said inner and outer roller bearings having. inner rings sleeved on theend portion of said shaftffor longitudinal movement, the inner ring; ofthe inner roller bearing abutting said annular shoulder and the innerring of the outer roller bearing abutting the inturned rim flange ofsaid end cap.

3. The combination ofj a shaft having an end portion provided with astop at its innerend and an axial bore, closure means in the outer endof said bore and having an axial hole, a pin extending through said holeand having a stop adapted' to coactwith said closure means to limit theoutward movement of the pin, an end' cap fixed to the outer end of saidpin and' having an inturned rim flange fittingl over the outer 'edge ofsaid` shaft, means releasably connecting said end cap to the outer endof said shaft, a flywheel having a hub provided with a stop spaced from'its outer end, an inner bearing having an outer ring abut-A ting saidhub stop, a sleeve telescoped within said hub with its inner endabutting said ring and having an internal annular support normallyspaced from -said shaft, an` outer bearing havin r an outer ringabutting the outer end of said sleeve, and an annular end memberreleasably.` connected to the outer end of saidhub and having aninwardly extending annular flange abutting the outer ring of said outerbearing and acting to clamp said sleeve between said outer rings, saidinner and outer bearings having inner rings sleeved on the end portionof said shaft for longitudinal movement, the inner ring of theinnerbearing abutting said shaft stop and the` inner, ring of the outerbearing abuttingthe inturned rim flange of said end cap, the release ofAsaidv end cap permitting the flywheel to be moved; longitudinally of theshaft, such movement'being-` limited by the engagement of the stop; ofsaid: pin with said closure means to prevent the accidental completewithdrawal of the flywheelV from the` shaft, said internal annularsupport eoactingwithl the shaft to support the flywheel when the latteris partiallywithdrawn to such an extent that the inner` ring of theouter bearing is clear ofthe outer end of the shaft.

necting said end cap to the outer end of said` shaft, a iiywheel havinga hub provided with ay stop spaced from vits outer end, an inner bearinghaving an outer ring abutting said hub stop;

i a sleeve telesooped within said hub with itsinner end abutting saidring, an outer bearing having an outer ring abutting the 'outer end ofsaid sleeve, and an annular end member releasably connected to the outerend of saidl hub and having an inwardly extending annular: flangeabutting the outer ring of said outer bearing and acting to clamp saidsleeve between said outer rings, said inner and outer bearings havinginner rings sleeved` on the end portion of said shaft for longitudinalmovement, the inner ring of' the inner bearing' abutting said shaft stopand the inner ring of the outer bearing abutting the inturned rim flangeof said end cap, the release of said end Cap permitting the flywheel -tobe moved longitudinally of the shaft, such movement being limited by theengagement of the stop of said pin with said closure means to preventthe accidental complete withdrawal of the flywheel from the shaft.

5. The combination of a shaft having an end portion provided with anaxial bore, said bore having restricted means provided with an axialhole, a pin extending through said hole and having astop adapted tocoact with said restricted means to limit the outward movement of thepin, an end cap fixed to the outer end of said pin and having aninturned rim flange fitting over the outer edge of said shaft, meansconnecting said end cap to the outer end of said shaft, a flywheelhaving a hub, an inner bearing, a sleeve telescoped within said hub andhaving an internal support; normally spaced from said shaft; anl outerbearing, an annular end member on the outer end of said hub, said innerand outer bearings being mounted on the end portion of said shaft forlongitudinal movement, and a closure removably mounted on the saidannular end member, said cap connecting means being made `accessible forreleasing said end cap from said shaft by the opening of said closure,the release of said end cap permitting the flywheel to be movedlongitudinally of the shaft, said internal' portion provided with anaxial bore, said bore lhaving restricted means provided with an axialhole, a pin extending through said hole and having a stop adapted tocoact with said restricted means to limit the outward `movement of thepin, an end cap fixed to the outer end of said pin, means connectingsaid endeap to the outer end ofV said shaft, a, iiywheel having a hub',an inner bearing, a sleeve telescoped .within said hub and having aninternal support normally spaced from said shaft, an outer bearing, andan annular end member on the outer endof saidhub, said inner and outerbearings being mounted on the: end portion of said shaft forlongitudinal movement.

'7. 'I'he combination. of ashaft having an end portion provided with anannular shoulder at its "inner end, a iiywheel having a hub providedwith an internal annular fiange spaced from its outer end, an innerroller bearing having an outer ring abutting said hub flange, a sleevetelescoped within said hub `with its inner end abutting said ring andhaving an internal annular support normally spaced from said shaft, anouter roller bearing having an outer ring abutting the outerV end ofsaid sleeve, means acting to longitudinally clamp said outer rings andsleeve together and against said hub flange, said roller bearings havinginner rings sleeved on the end portion of said shaft `for longitudinalmovement, the inward movement of the flywheel assembly being limited bythe engagement of the inner ring of the inner roller bearing with saidannular shoulder, and an end cap releasably connected to the outer endof said shaft and having Cil an inturned rim flange engaging the innerring of the outer bearing, the release of said end cap permitting theflywheel to be moved outwardly longitudinally of the shaft, saidinternal support coacting with the shaft to support the flywheel whenthe latter is partially withdrawn to such an extent that the inner ringof the outer roller bearing is clear of the shaft.

8. The combination of a shaft having an end portion provided with anannular shoulder at its inner end, a flywheel having a hub provided withan internal annular flange spaced from its outer end, an inner bearinghaving an outer ring abutting said hub flange, a sleeve telescopedwithin said hub with its inner end abutting said ring and having aninternal annular support normally spaced from said shaft, an outerbearing having an outer ring abutting the outer end of said sleeve,means acting to longitudinally clamp said outer rings and sleevetogether and against said hub flange, said bearings having inner ringssleeved on the end portion of said shaft for longitudinal movement, theinward movement of the flywheel assembly being limited by the engagementof the inner ring of the inn-er bearing with said annular shoulder, andan end cap releasably connected to the outer end of said shaft andengaging the inner ring of the outer bearing, the release of said endcap permitting the flywheel to be moved outwardly longitudinally of theshaft, said internal support coacting with the shaft to support theflywheel when the latter is parially withdrawn.

9. The combination of a shaft, a flywheel, an inner bearing, a supportwithin said flywheel normally out of contact with said shaft, an outerbearing, said bearings being sleeved on the end portion of said shaftfor longitudinal movement, a member releasably connected to the outerend of said shaft, the release of said member permitting the flywheelassembly to be moved outwardly longitudinally of the shaft, said supportcoacting with the shaft to hold up the flywheel when the latteris'partially withdrawn, and means acting to limit the movement of saidflywheel relative to said shaft.

1). The combination of a shaft, a flywheel, an inner bearing, a supportwithin said flywheel normally out of contact with said shaft, an outer.

bearing, said bearings being sleeved on the end portion of said shaftfor longitudinal movement, and a member releasably connected to theouter end of said shaft, the release of said member permitting theflywheel assembly to be moved outwardly longitudinally of the shaft tohold up the flywheel when the latter is partially withdrawn.

1l. The combination of a shaft having an axial bore, a flywheel having ahub disposed on said shaft and provided with spaced bearing units, meansconnecting said bearing units and hub in assembled relation, a nutthreaded in the outer end of said bore and having an axial hole and anouter cross tongue, a pin extending through said hole and having stopmeans engageable with said nut to limit the outward movement of saidflywheel, an end cap threaded to the outer end of saidpin and having aninner cross groove re` ceiving said cross tongue and an inturned angeengaging the inner ring of the outer one of said bearing units, andreleasable means connecting said end cap to the end of said shaft, therelease of said last named means permitting the turning of said end capto screw said nut out of said bore to entirely withdraw said flywheelfrom said shaft with the bearing units in place in the hub.

12. The combination of 'a shaft having an axial bore, a flywheel havinga hub disposed on said shaft and provided with spaced bearing units, anut threaded in the outer end of said bore and having an axial hole andan outer cross tongue, a pin extending through said holev and havingstop means engageable with said nut to limit the outward movement ofsaid flywheel, a member threaded to the outer end of said pin and havingan inner cross groove receiving said cross tongue and an inturned iiangeengaging the inner ring of the outer one of said bearing units, andreleasable means connecting said member to the end of said shaft, therelease of said last named means permitting the turning of said memberto screw said nut.

13. The combination of a shaft having an axial bore, a flywheel having ahub disposed on said shaft and provided with spaced bearings, thebearings being longitudinally 'slidable on said shaft, means connectingsaid bearings and hub in assembled relation, a nut threaded in the outerend of said bore and having an axial hole and an outer cross tongue, apin extending through said hole and having means at its inner endengageable with said nut to limit the outward movement of said flywheel,a member fixed to the outer end of said pin and having an inner crossgroove receiving said cross tongue, and releasable means connecting saidmember to the end of said shaft, the release of said last named meanspermitting the turning of said member to screw said nut out of said boreto entirely withdraw said flywheel' from said shaft with the bearings inplace in the hub.

14. The combination of a shaft having a shoulder spaced from one end andan axial bore, a flywheel having a hub disposed on said shaft andprovided with bearings, a nut threaded in the outer end of said bore, apin extending through said hole and having means at its inner endengageable with said nut to limit the outward movement of said flywhel,an end cap threaded to the outer end of said pin and having an inturnedflange engaging the inner ring of the outer one of said bearings, andreleasable means connecting said end cap to the end of said shaft, thenut and end cap having co-engaging means, the release of said last namedmeans permitting the turning of said end cap to screw said nut out ofsaid bore to entirely withdraw said iiywheel from said shaft with thebearings in place in the hub.

15. The combination of a shaft, a flywheel mounted on said shaft foraxial movement thereon and having inner and outer bearing units with anannular support between said bearing units and normally out of contactwith the shaft, said shaft having an axial bore, a stop member threadedinto said bore, a stop pin slidable in` said stop member and providedwith a stop coacting with said stop member on said shaft to limit thewithdrawal movement of the flywheel, the outer end of said stop pinbeing detachably secured to the shaft by means of an element overlyingsaid threaded stop member and having detachable engagement therewithwhereby the shaft stop member may be removed by the rotation of said pincarrying element, and a hub cap for said iiywheel adapted to permitaccess to the securing means for said stop pin.

16. The combination of a shaft, a flywheel mounted on said shaft foraxial movement thereon and having inner and outer bearing units with anannular support between said bearing units and normally out of contactwith the shaft, said shaft having an axial bore, a stop member threadedinto said bore, and a stop pin slidable in said stop member and providedwith a stop coacting with said stop member onsaid shaft to limit theWithdrawal movement of the flywheel, the outer end of said stop pinbeing detachably secured to the shaft by means of an element overlyingsaid threaded stop member and having detachable engagement therewithwhereby the shaft stop member may be removed by the rotation of said pincarrying element.

17. The combination of a shaft, a flywheel mounted on said shaft foraxial movement thereon and having inner and outer bearing units with anannular support between said bearing units and normally out of contactwith the shaft, said shaft having an axial bore, a stop member threadedinto said bore, and a stop pin slidable in said stop member and providedwith a stop coacting with said stop member on said shaft to limit thewithdrawal movement of the flywheel, the outer end of said stop pinbeing detachably secured to the shaft.

18. The combination with a shaft, of a flywheel mounted on said shaftfor axial movement thereon and having an internal support normally outof contact with the shaft, a stop pin slidably associated with saidshaft, said shaft having coacting stop means whereby the completewithdrawal of the flywheel from the shaft is prevented, said supportbeing in supporting engagement with the shaft when the wheel ispartially withdrawn, means for detachably securing the outer end of saidstop pin to said shaft when the wheel is adjusted to its normal oroperative position thereon, and a closure means at the outer end of saidwheel normally enclosing said means for securing said stop pin to saidshaft but permitting access thereto when the closure means is open.

19. The combination with a shaft, of a flywheel mounted on said shaftfor axial movement thereon, a stop pin slidably associated with saidshaft, said shaft having coacting stop means whereby the completeWithdrawal of the flywheel from the shaft is prevented, means fordetachably securing the outer end of said stop pin to said shaft whenthe wheel is adjusted to its normal or operative position thereon, and aclosure means at the outer end of said wheel normally enclosing saidmeans for securing said stop pin to said shaft but permitting accessthereto when the closure means is open.

20. The combination with a shaft, of a flywheel mounted on said shaftfor axial movement thereon, a stop pin Slidably associated with saidshaft, said shaft having coacting stop means whereby the completewithdrawal of the flywheel from the shaft is prevented, and means fordetachably securing the outer end of said stop pin to said shaft.

GUSTAF O. JOHNSON.

